JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
Given below are two statements:
Statement I: The second ionization enthalpy of B, Al and Ga is in the order of \(B > Al > Ga\).
Statement II: The correct order in terms of first ionization enthalpy is \(Si < Ge < Pb < Sn\).
In the light of the above statements, choose the correct answer from the options given below:
- A Both Statement I and Statement II are true
- B Both Statement I and Statement II are false
- C Statement I is true but Statement II is false
- D Statement I is false but Statement II is true
Answer & Solution
Correct Answer
(B) Both Statement I and Statement II are false
Step-by-step Solution
Detailed explanation
Statement I: The second ionization enthalpy of Ga is higher than that of Al. This is due to the poor shielding effect of the ten \(3d\) electrons in Ga, which increases the effective nuclear charge and holds the valence electrons more tightly. The correct order of second…
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